What do you do when adverts start appearing when you unlock your phone. You know that one of your apps is responsible, but which one. More often than not the culprit is the app that has been been installed or update most recently - sometimes apps can install addition apps that you don't even know about.
App Monitor can help you identify the most recent changes. When it is first run it creates a database of all of your current apps. The next time it is run it checks all of your apps against the contents of the database.